In this particular case, it might also feel uncanny because the keywords were merely translated; but the grammar (most notably word order) doesn't (always) match.
`asynchrone fonction` feels wrong because it's the wrong word order for French; it should be `fonction asynchrone`...
As an avid language learner myself, I would be inclined to agree, were it not for the fact that about half of my father's siblings really have no aptitude _at all_ for languages.
One uncle has been living in France for over 40 years, but anyone can still hear he’s a foreigner, most Dutch will immediately recognize his accent as Dutch, and many can immediately pinpoint the region he grew up in. (Part of the reason is probably: he himself doesn’t care. He just talks —sometimes with hands and feet— and his interlocutors manage to pick up enough of what he says to suit him.)
An aunt used to live in Brazil for years, and never could get the hang of Brazilian Portuguese. Her son has been living in Brazil for some 15 year now, and is still not fluent in the language...
People's ability to pick up languages can be totally unrelated to their general intelligence.
That said, I _personally_ agree that immersion is the best way of learning a new language. But it still does take time, and you've got to have the opportunity.
Pluto was a planet when I learned about it in school. I also learned that it was the one that was discovered last.
When they decided to change its status to dwarf planet, I looked up the reasons behind it, read up on the complexities of the matter, and could see the reasoning behind the change.
Then again, I hadn't reached thirty yet. Even in my forties I find it takes slightly more time to change my mind on some things...
`asynchrone fonction` feels wrong because it's the wrong word order for French; it should be `fonction asynchrone`...